Malicious PDF — malware analysis report

Static analysis result for SHA-256 598e80f72583d80f…

MALICIOUS

PDF

33.5 KB Created: 2021-07-06 03:20:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: b8992fa2869ca4f7e6ef661e83bbcfeb SHA-1: a92c2c5342302772d0f0bd2cafd8d0f679705873 SHA-256: 598e80f72583d80f460345d033b5c919254ba9811605a89fb83f737039c50b3f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/431946152/robux-online-game-hack. The document body and heuristics indicate a lure for game hacks and free generators, suggesting a phishing or scam attempt. The presence of embedded URLs and the nature of the lures strongly suggest a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/431946152/robux-online-game-hack In PDF document text
    • https://www.xenonsvjetla.com/files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/pokemon-go-free-and-nintendo-switch_GM1094591345.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-robux-on-ipad-real_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-free-account-and-password-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-hacks-injector_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-hack-grand-blox-auto-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/daily-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D9D 22244 bytes
SHA-256: 532f6b58497b818771b3b3733a966e3e6f0073b8914473b94a33758075a74da7
font_01_sfnt_off00005ed9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED9 18744 bytes
SHA-256: 0d65403b238a7007715d414cecaabb3c72f82c70eaf60aa0c41e152bd513deae

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